More info can be found at trytons home page. http://www.tryton.org/ Here they give info on their modules:
Currently, the main modules available for Tryton cover the following fields of activity:
Manufacturing Resource Planning (MRP)
Lead and Opportunity Management
They establish a sane base and an easy to use abstraction of some of the key concepts for every business customisation.
I don't think it is quite the book keeping solution I was looking for, but I think it might be something of interest to others who are using back office. The best part is, its already in the repos and ready to go. At least its in the old SolydK BE repos. My guess is that its in the Jesse repos too.